Hi, i try to use the mint distr on my system, but i cant, I only can use the liveCD. When i install OS on hard disk, and boot it the grub say me any of these errors>

Error 22 No such partition ???Error 23 error while parsing number ????

I try to modify in the grub the line of root *root (hd3,4)* , looking for the correct disk and partition, but i cant.I try since root(hd0,1) to root(hd3,2) and sda, b, c... i reinstall mint 3 or 4 times, and ever the same errors